George Duke wrote on Tue, Aug 16, 2011 04:19 PM UTC:
More classical problem-theme interference Grimshaws and Novotnys:
http://www.chessbase.com/newsdetail.asp?newsid=7460.
The Organ Pipes were first composed by Sam Loyd in 1859.
A direct-mate moremover double-side Novotny/Grimshaw by Hans-Peter Rehm.
